Was just at HKDL for the first time today, so figured this was as good a place as any to give a few thoughts.
Firstly, I really enjoyed my time there and wish I had more than one day. It was fairly crowded today which may make a difference as queues were quite long, but I don't think there's any question you can fill a whole day and more there now. I didn't get to see everything I wanted to and would probably book a couple of nights at one of the hotels if I come through Hong Kong again.
One thing that was a lot better to me in person than in pictures was the castle. I really felt it looked horrible in pictures, but I was surprised how things that had looked weird in terms of scale looked completely fine in person. I will say, though, that the castle also suffered from the main thing that was a little worse than I expected, which was faded and worn paint. That issue was fairly contained to but also noticeably bad in Fantasyland and Tomorrowland. Other areas such as Toy Storyland (meh, probably better in Paris for feeling more contained) and Mystic Point looked particularly sharp, and it kind of felt as through FL and TL are at the end of a refurbishment cycle.
Mystic Manor was not just the great attraction it is renowned to be, but also perhaps the best example I have seen of a trackless ride done right. Not sure why they have gone in the direction of big warehouses and parking ride vehicles in front of screens in the years since when this seems a far better model. I know people suggest this ride doesn't get queues, but it was one of the longer queues all day today, ranging from 45 to 60 minutes for most of the day.
Anyway, just thought I would give a few impressions!